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Set Access Mode

Prerequisites​

Before everything we are going to do, please refer to Installation Guide to install Fluid on your Kubernetes Cluster, and make sure all the components used by Fluid are ready like this:

$ kubectl get pod -n fluid-system
NAME                                  READY   STATUS    RESTARTS   AGE
alluxioruntime-controller-5b64fdbbb-84pc6   1/1     Running   0          8h
csi-nodeplugin-fluid-fwgjh                  2/2     Running   0          8h
csi-nodeplugin-fluid-ll8bq                  2/2     Running   0          8h
dataset-controller-5b7848dbbb-n44dj         1/1     Running   0          8h

Normally, you shall see a Pod named "dataset-controller", a Pod named "alluxioruntime-controller" and several Pods named "csi-nodeplugin". The num of "csi-nodeplugin" Pods depends on how many nodes your Kubernetes cluster have(e.g. 2 in this demo), so please make sure all "csi-nodeplugin" Pods are working properly.

Set dataset access mode​

The access mode of the dataset is set to ReadOnlyMany when user doesn`t specif the access mode. If there is a need to modify the default access mode, you need to specify it in spec.accessModes[] before creating it.

The currently supported access modes are：

  • ReadOnlyMany : the volume can be mounted as read-only by many nodes
  • ReadWriteMany : the volume can be mounted as read-write by many nodes

Example​

This example sets the access method of the dataset to ReadWriteMany.

apiVersion: data.fluid.io/v1alpha1
kind: Dataset
metadata:
  name: demo
spec:
  mounts:
    - mountPoint: https://mirrors.bit.edu.cn/apache/hbase/2.4.14/
      name: hbase
      path: "/"
  accessModes:
    - ReadWriteMany